Assassin's Creed: Brotherhood keeps its sandbox style gameplay
in an open world based on the city of Rome. Like the previous
installments, the gameplay's core mechanics are based on Parkour movements, crowd-blending stealth,
assassinations and melee fighting system. However, for the first
time in the series, the game offers a multiplayer mode alongside 15
hours of single player campaign.

As a Master Assassin, Ezio must reorganize his Brotherhood in
Rome to fight against the Templars. The player can recruit new
members by completing missions around the city, send them to
assignments around Europe or call them for support during missions
(if they are not already occupied). Tasking the novice Assassins is
essential to make them gain experience, and the player is able to
customize their appearance, skills and weapon training by spending
the skill points they've earned.

The multiplayer experience is available on all platforms. The
multiplayer beta was exclusive to PlayStation 3 users and began on
October 4, 2010, lasting just under two weeks. In
multiplayer, the players are Templars in training at the Abstergo
facility. They use the animi (plural for animus) seen at the
beginning of Assassin's Creed II to access memories of Assassins
and then to acquire their skills using the "bleeding effect". There
are multiple modes and maps in the multiplayer as well as its own
skill and rank advancement systems separate from the single player
campaign.